Animals that are ............... might become extinct if we don't protect them.
A. exploit B. survive C. endangered D. sanctuary
Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become extinct if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or other valuable parts of their bodies. Some birds, such as parrots, are caught alive, and sold as pets. For many animals and birds, the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses and industry, there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and harm the wildlife. The most successful animals on earth – human beings – will soon be the only ones left, unless we can solve this problem.
21. What does the word “extinct” in line 2 mean?
a. dead
b. no longer in existence
c. not in a place because of illness
d. suffering from a mental or physical handicap
22. This word “this” in line 3 refers to................
a. wildlife
b. danger
c. the fact that people are more aware that wildlife is danger
d. the fact that many species of animals could easily become extinct
23. According to the passage , one of the reasons that people hunt animals is..................
a. they want their fur or other valuable parts of their bodies
b. they want to kill them
c. they consider this a sport
d. they want to sell them as pets
24. Which of the following is not true?
a. Human beings are the most successful animals on the earth
b. If we can solve the problem, we will be the only ones left
c. Farmers use chemicals in order to grow better crops
d. Chemicals pollute the environment
25. What can be the best title of the passage?
a. Birds Are in Danger!
b. The Threat to the Environment
c. The Most Successful Animals
d. Protect Our Earth!
Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become extinct if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or other valuable parts of their bodies. Some birds, such as parrots, are caught alive, and sold as pets. For many animals and birds, the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses and industry, there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and harm the wildlife. The most successful animals on earth – human beings – will soon be the only ones left, unless we can solve this problem.
1.What is happening to the wild animals?
A.They are in danger.
B.They beecome expensive.
C.More people love them.
D.They die.
2.According to the passage,one of the reasons that people hunt animals is__________.
A.People want to take them to the zoo.
B.They want to kill them.
C.they want to sell them as pets
D.they went their fur or other valuable parts of their boies
3.What does the word 'they' in line 5 refer to?
A.parrots
B.birds
C.animals and birds
D.elephants
4.What is the disadvantage of using more land for farm?
A.People will have more food
B.People will build more houses and industry zones
C.Animals and birds will not have a "house" to live in
D.People are happy with this
5.What can be the tile of the passage?
A.Birds are in danger!
B.The threat to the Environment
C.The most Successful Animals
D.Land pollution
Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become extinct if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or other valuable parts of their bodies. Some birds, such as parrots, are caught alive, and sold as pets. For many animals and birds, the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses and industry, there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and harm the wildlife. The most successful animals on earth – human beings – will soon be the only ones left, unless we can solve this problem.
1.What is happening to the wild animals?
A.They are in danger.
B.They beecome expensive.
C.More people love them.
D.They die.
2.According to the passage,one of the reasons that people hunt animals is__________.
A.People want to take them to the zoo.
B.They want to kill them.
C.they want to sell them as pets
D.they went their fur or other valuable parts of their boies
3.What does the word 'they' in line 5 refer to?
A.parrots
B.birds
C.animals and birds
D.elephants
4.What is the disadvantage of using more land for farm?
A.People will have more food
B.People will build more houses and industry zones
C.Animals and birds will not have a "house" to live in
D.People are happy with this
5.What can be the tile of the passage?
A.Birds are in danger!
B.The threat to the Environment
C.The most Successful Animals
D.Land pollution
Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become extinct if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or other valuable parts of their bodies. Some birds, such as parrots, are caught alive, and sold as pets. For many animals and birds, the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses and industry, there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and harm the wildlife. The most successful animals on earth – human beings – will soon be the only ones left, unless we can solve this problem.
1.What is happening to the wild animals?
2.According to the passage,one of the reasons that people hunt animals is__________.
3.What does the word 'they' in line 5 refer to?
4.What is the disadvantage of using more land for farm?
5.What can be the tile of the passage?
1 Many species of animals are threatened, and could easily become extinct.
2 People hunt animals for their fur.
3 Animals and birds.
4 There are fewer open spaces than there once were.
5 Câu này mình không nghĩ được tiêu đề ạ.
1.They are threatened,and could easily become extinct.
2.Because:
-For their fur or other valuable things on their bodies.
-For the economy:sold as pet,...
3."They" refer to the animals.
4.-Making the habitats of the wild animals are disappearing
-As the farmers use powerful chemicals to help them grow better crops,they also pollute the environment and harm the wildlife.
5."Save the wild animals"."The wildlife of the world"...
II.Mỗi câu có một lỗi sai. Hãy viết lại cho đúng
1.If we drop litter on a beach, we could see it on another beach
2.Unless we protect the rainforest there aren't enough oxygen.
3.if we protect endangered species, most of them will become extinct.
4.If we destroy the ozone layer, nothing sacves us from the ultra-violet rays.
5. What will happens to the Earth if the global temperatur rises?
6.Daisy will buy a new dress if she doesn't have enough money.
7. If the sea gets warmer, the ice at the South pole would melt.
8.If the weather is not fine, we will go for a picnic
Đọc đoạn văn sau và đánh dấu chữ cái A, B, C hoặc D để chỉ ra câu trả lời đúng cho mỗi câu hỏi.
Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become extinct if we do not make an effort to protect them. There are many reasons for this. In some cases animals are hunted for fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive , and sold as pets. For many animals and birds, the problem is that their habit at-the place where they live is disappearing. More land is used for farms, for houses and industry, and there are fewer open places than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and harm the wildlife. The most successful animals on the earth - human beings will soon be the only ones left, unless we can solve this problem.
27. What does the word “extinct” in line two mean?
A. dead
B. no longer in existence
C. suffering from a mental or physical handicap
D. not in a place because of illness
28. The word “this” in line three refers to…………….
A. the fact that many species of animals could easily become extinct
B. the fact that people are more aware that wildlife is in danger
C. wildlife
D. danger
29. According to the passage, one of the reasons that people hunt animals is……………..
A. They want their fur and other valuable parts of their bodies
B. They want to sell them as pets
C. They consider this a sport
D. They want to kill them
30. Which of the following is not true?
A. Human beings are the most successful animals on earth.
B. If we can solve the problem, we will soon be the only ones left.
C. Farmers use chemicals in order to grow better crops.
D. Chemicals pollute the environment.
31. What can be the best title of the passage?
A. Protect Our Earth. B. Birds are in Danger.
C. The Threat to the Environment. D. The Most Successful Animals.
27. B. (no longer in existence : Không còn tồn tại)
28. A (the fact that many species of animals could easily become extinct : thực tế là nhiều loài động vật có thể dễ dàng tuyệt chủng)
29. A (They want their fur or other valuable parts of their bodies : Họ muốn lông hoặc các bộ phận có giá trị khác trên cơ thể) (trong đoạn văn có chỗ : In some cases, animals are hunted for their fur or for other valuable pasts of their bodies)
30. B (If we can solve the problem, we will soon be the only ones left : Nếu chúng ta có thể giải quyết vấn đề, chúng ta sẽ sớm là những người duy nhất còn lại)
31. C (the threat to the environment : mối đe dọa đối với môi trường)
THAM KHẢO
27. B. (no longer in existence : Không còn tồn tại)
28. A (the fact that many species of animals could easily become extinct : thực tế là nhiều loài động vật có thể dễ dàng tuyệt chủng)
29. A (They want their fur or other valuable parts of their bodies : Họ muốn lông hoặc các bộ phận có giá trị khác trên cơ thể) (trong đoạn văn có chỗ : In some cases, animals are hunted for their fur or for other valuable pasts of their bodies)
30. B (If we can solve the problem, we will soon be the only ones left : Nếu chúng ta có thể giải quyết vấn đề, chúng ta sẽ sớm là những người duy nhất còn lại)
31. C (the threat to the environment : mối đe dọa đối với môi trường)
THAM KHẢO
27. B. (no longer in existence : Không còn tồn tại)
28. A (the fact that many species of animals could easily become extinct : thực tế là nhiều loài động vật có thể dễ dàng tuyệt chủng)
29. A (They want their fur or other valuable parts of their bodies : Họ muốn lông hoặc các bộ phận có giá trị khác trên cơ thể) (trong đoạn văn có chỗ : In some cases, animals are hunted for their fur or for other valuable pasts of their bodies)
30. B (If we can solve the problem, we will soon be the only ones left : Nếu chúng ta có thể giải quyết vấn đề, chúng ta sẽ sớm là những người duy nhất còn lại)
31. C (the threat to the environment : mối đe dọa đối với môi trường)
1. If you buy souvenirs made from endangered animals or plants, you ___ contribute to making them become extinct.
a. would
b. might
c. could
d. are
2. You ___ help the local people if you buy local products whenever possible and pay a fair price for what you buy.
a. could
b. would
c. wouldn't
d. will
3. Every year, millions of people descend ___ protected and pristine natural areas to observe rare species.
a.on
b. at
c. in
d. to
4. A number of reports have cast doubt___ the value of ecotourism.
a.with
b. about
c. in
d. on
5. It's hard to deny that humanity has played a pretty big role in changing nature ___ the worse.
a.with
b. to
c. for
a.at
1. If you buy souvenirs made from endangered animals or plants, you ___ contribute to making them become extinct.
a. would
b. might
c. could
d. are
2. You ___ help the local people if you buy local products whenever possible and pay a fair price for what you buy.
a. could
b. would
c. wouldn't
d. will
3. Every year, millions of people descend ___ protected and pristine natural areas to observe rare species.
a.on
b. at
c. in
d. to
4. A number of reports have cast doubt___ the value of ecotourism.
a.with
b. about
c. in
d. on
5. It's hard to deny that humanity has played a pretty big role in changing nature ___ the worse.
a.with
b. to
c. for
a.at
1. Fill in each numbered blank with one suitable word.
Nowadays people are more aware that wildlife all over the world is in (21) _________ . Many species of animals are threatened, (22) __________ could easily become extinct if we don’t make an effort to protect them. There are many reasons for this. In some cases, animals are hunted (23) _________ their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive, and sold as pets. For many animals and birds, the problem is that their habitat – the place where they live – is disappearing. More (24) _________is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals make the environment (25) __________and harm the wildlife.
nb21. A. danger B. dangerous C. dangerously D. endanger
th22. A. but B. and C. because D. so
nb23. A. for B. of C. in D. on
nb24. A. house B. garden C. area D. land
vd25. A. has B. are C. pollutes D. polluted
III. READING
1. Fill in each numbered blank with one suitable word.
Nowadays people are more aware that wildlife all over the world is in (21) _________ . Many species of animals are threatened, (22) __________ could easily become extinct if we don’t make an effort to protect them. There are many reasons for this. In some cases, animals are hunted (23) _________ their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive, and sold as pets. For many animals and birds, the problem is that their habitat – the place where they live – is disappearing. More (24) _________is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals make the environment (25) __________and harm the wildlife.
nb21. A. danger B. dangerous C. dangerously D. endanger
th22. A. but B. and C. because D. so
nb23. A. for B. of C. in D. on
nb24. A. house B. garden C. area D. land
vd25. A. has B. are C. pollutes D. polluted
WHY DO ANIMALS GO EXTINCT?
Different kinds of animals have appeared and disappeared throughout Earth’s history. Some animals go extinct because the climate (4)_______ they live changes. The climate may become wetter or drier. It may become warmer or cooler. If the animals cannot change, or adapt, to the new climate, they die.
Some animals go extinct because thay cannot (5) _______ with other animals for food. Some animals go extinct because they are killed by enemies. New kinds of animals are always evolving. Evolving means that the animals are changing (6) _______ from generation to generation. Small differences between parents, children, and grandchildren slowly add up over many, many generations. Eventually, a different kind of animal evolves.
Sometimes many of the animals on Earth go extinct at the (7) _______ time. Scientists call this a mass extinction. Scientists think there (8) _______ at least five mass extinctions in Earth’s history. The last mass extinction happened about 65 million years ago. This mass extinction killed off the dinosaurs.
Question 4: A. where B. which C. when D. what
Question 5: A. complete B. find C. compete D. exist
Question 6: A. accidentally B. suddenly C. quickly D. slowly
Question 7: A. same B. similar C. different D. various
Question 8: A. has been B. have been C. will be D. are
WHY DO ANIMALS GO EXTINCT?
Different kinds of animals have appeared and disappeared throughout Earth’s history. Some animals go extinct because the climate (4)_______ they live changes. The climate may become wetter or drier. It may become warmer or cooler. If the animals cannot change, or adapt, to the new climate, they die.
Some animals go extinct because thay cannot (5) _______ with other animals for food. Some animals go extinct because they are killed by enemies. New kinds of animals are always evolving. Evolving means that the animals are changing (6) _______ from generation to generation. Small differences between parents, children, and grandchildren slowly add up over many, many generations. Eventually, a different kind of animal evolves.
Sometimes many of the animals on Earth go extinct at the (7) _______ time. Scientists call this a mass extinction. Scientists think there (8) _______ at least five mass extinctions in Earth’s history. The last mass extinction happened about 65 million years ago. This mass extinction killed off the dinosaurs.
Question 4: A. where B. which C. when D. what
Question 5: A. complete B. find C. compete D. exist
Question 6: A. accidentally B. suddenly C. quickly D. slowly
Question 7: A. same B. similar C. different D. various
Question 8: A. has been B. have been C. will be D. are
WHY DO ANIMALS GO EXTINCT?
Different kinds of animals have appeared and disappeared throughout Earth’s history. Some animals go extinct because the climate (4)_______ they live changes. The climate may become wetter or drier. It may become warmer or cooler. If the animals cannot change, or adapt, to the new climate, they die.
Some animals go extinct because thay cannot (5) _______ with other animals for food. Some animals go extinct because they are killed by enemies. New kinds of animals are always evolving. Evolving means that the animals are changing (6) _______ from generation to generation. Small differences between parents, children, and grandchildren slowly add up over many, many generations. Eventually, a different kind of animal evolves.
Sometimes many of the animals on Earth go extinct at the (7) _______ time. Scientists call this a mass extinction. Scientists think there (8) _______ at least five mass extinctions in Earth’s history. The last mass extinction happened about 65 million years ago. This mass extinction killed off the dinosaurs.
Question 4: A. where B. which C. when D. what
Question 5: A. complete B. find C. compete D. exist
Question 6: A. accidentally B. suddenly C. quickly D. slowly
Question 7: A. same B. similar C. different D. various
Question 8: A. has been B. have been C. will be D. are
Different kinds of animals have appeared and disappeared throughout Earth’s history. Some animals go extinct because the climate (4)_______ they live changes. The climate may become wetter or drier. It may become warmer or cooler. If the animals cannot change, or adapt, to the new climate, they die.
Some animals go extinct because thay cannot (5) _______ with other animals for food. Some animals go extinct because they are killed by enemies. New kinds of animals are always evolving. Evolving means that the animals are changing (6) _______ from generation to generation. Small differences between parents, children, and grandchildren slowly add up over many, many generations. Eventually, a different kind of animal evolves.
Sometimes many of the animals on Earth go extinct at the (7) _______ time. Scientists call this a mass extinction. Scientists think there (8) _______ at least five mass extinctions in Earth’s history. The last mass extinction happened about 65 million years ago. This mass extinction killed off the dinosaurs.
Question 4: A. where B. which C. when D. what
Question 5: A. complete B. find C. compete D. exist
Question 6: A. accidentally B. suddenly C. quickly D. slowly
Question 7: A. same B. similar C. different D. various
Question 8: A. has been B. have been C. will be D. are
I. PRONUNCIATION
Choose the word that has the main stress placed differently from the others.
1. A. agriculture B. endangerment C. environment D. establishment
2. A. nature B. offspring C. campaign D. species
3. A. capture B. discharge C. survive D. pollute
4. A. fertilize B. interfere C. cultivate D. devastate
5. A. extinct B. peaceful C. modern D. cautious
Choose the word that has the underlined part pronounced differently from that of the others.
1. A. scatter B. nature C. danger D. race
2. A. exactly B. exist C. exhaust D. extinct
3. A. feature B. species C. weather D. decrease
4. A. survive B. prohibit C. fertilizer D. environment
5. A. decreased B. influenced C. endangered D. established
II. VOCABULARY AND GRAMMAR
A. Choose the word or phrase A, B, C, or D that best completes the sentence.
1. In some countries environmental organizations have been ...... to inform people and gain their support.
A. made up B. set up C. brought up D. taken up
2. We continue to ...... rainforests and increase the dangers of global warming.
A. cut off B. cut in C. cut out D. cut down
3. ...... aren't effective anymore because insects have become resistant to them.
A. Fertilizers B. Pesticides C. Herbicides D. Medicines
4. They started a campaign to ...... smoking among teenagers.
A. encourage B. decrease C. discourage D. prohibit
5. If we do not take steps to protect the world's wild life, many species of birds and animals are likely to ...... completely.
A. die out B. die down C. die away D. die from
6. The Earth will be a planet where' human beings, animals and plants live in peaceful .......
A. cooperation B. coordination C. corporation D. coexistence
7. My English teacher, Mrs Brookes, was someone ... I had great respect.
A. that B. whom C. for who D. for whom
8. She joined the local tennis club, ...... were at least 60.
A. most of its members B. most whose members
C. most of whose members D. most members
9. Fleming's discovery of penicillin, ......, had a major influence on the lives of people in the 20th century.
A. awarded the Nobel Prize B. which awarded the Nobel Prize
C. that he was awarded the Nobel Prize for D. for which he was awarded the Nobel Prize
10. Jean Fragonard was a French artist ______ portrait of children.
A. whose paintings B. who has painted C. who painted D. whose painted
11. Portland, Maine, is ______ the poet Henry Wadsworth Longfellow spent his early years.
A. where B. in where C.which D. which is where
12. Walkers can unwittingly damage the fragile environment ______.
A. that the birds live B. where the birds live in C. which live the birds D. in which the birds live
Choose the word or phrase - a, b, c or d - that needs correcting.
13. Among us students are many foreigners whose attend language classes at the south campus.
A B C
14. Is it right that politicians should make important decisions without consulting the public to who they are
A B C D
accountable?
15. EU nations may have to make fundamental changes in their economic, political, and the technological
A B
institutions if they are to preserve the environment.
C D
B. Complete these sentences with the correct form of the verb in the box.
endanger scatter coexist pollute devastate
discharge prohibit survive protect capture
1. Many birds didn't _______________ the severe winter.
2. Animals shouldn't be _______________ for recreation arid entertainment.
3. The health of our children are being _______________ by exhaust fumes.
4. The factory was fined for _______________ chemicals into the river.
5. The explosion _______________ a flock of birds roosting in the trees.
6. Laws have been introduced to _______________ killing endangered animals,
7. The air in the city is heavily _______________ with traffic fumes.
8. The government should do more to _______________ the environment.
9. It is possible for local wildlife to _______________ with industry.
10. Western India was _______________ by a huge earthquake.
III. READING
Read the text carefully then choose the correct answers.
Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which 'once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct.
What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.
Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has' had some effect, but by itself It will not prevent animals from being hunted and killed.
1. What is the main topic of the passage?
A. The Bengal tiger B. International boycotts
C. Endangered species D. Problems with industrialization
2. The word 'poachers' used in line 7 could be best replaced by which of the followings?
A. Illegal hunters B. Enterprising researchers.
C. Concerned scientists D. Trained hunters
What is an act of cruelty according to the passage?A. Having interest in material gain.
B. Hunting endangered animals.
C. Killing animals for personal satisfaction.
D. Causing the problem of extinction. .
Which of the following is not mentioned in the passage as a way to protect animals from extinction?A. Introduce laws to prohibit the killing of endangered animals.
B. Establish wildlife reserves.
C. Refuse to buy animal products.
D. Raise money to invest in equipment and patrol.
Which of the following best describes the author's attitude?A. Forgiving B. Surprised C. Vindictive D. Concerned
IV. WRITING
A. Rewrite the sentences, using Relative Clauses.
1. I was sitting on a chair. It suddenly collapsed.
The chair ..............................................
2. Mr Smith said he was too busy to speak to me. I had come specially to see him.
Mr Smith ...............................................
3. I saw several houses. Most of them were quite unsuitable.
I ......................................................
4. Graham took us to his office. It was filled with books.
The office ...............................................
5. Her father died last year. She looked after him for over twenty years.
Her father .............................................
6. The bed has no mattress. I sleep on this bed.
The bed ...............................................
7. They picked up five boat-loads of refugees. Some of them had been at sea for several months.
They ...................................................
8. Tom came to the party in patched jeans. This surprised the other guests. Most of the other guests were wearing evening dress.
Tom ....................................................
9. The people didn't know French. He was speaking to these people.
The people ...............................................
10. Mr Jones was very generous about overtime payments. I was working for him.
Mr Jones ................................................
B. Write complete sentences about the tropical rainforest, using the cues given.
1. Nowadays/ tropical rainforests/ danger/ extinction.
2. Each year/ millions of acres/ rainforests/ clear/ make way/ population growth/ agriculture.
3. This/ result/ the destruction/ millions of plants.
4. This destruction/ cause/ some types of animals/ lose/ their natural habitat
5. It/ important/ us/ save/ the tropical rainforests.
Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.
Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are
caught (3)________. and sold as pets. For many animals and birds the problem is that their habitat - the place
where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________. wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________., unless we can solve this problem.
Điền vào ô 1
A. threat
B. problem
C. danger
D. vanishing
C
Kiến thức: Cụm từ, đọc hiểu
Giải thích:
to be in danger: đang gặp nguy hiểm
Các từ còn lại: threat (n): mối đe doạ; problem (n): vấn đề, rắc rối; vanishing (n): sự biến mất
Đáp án:C